Bass trumpet - Sound characteristics
The bass trumpet has a mighty, full and dark timbre, which exhibits the typical trumpet characteristics in all registers.
In the low register it is similar to the timbre of the tenor trombone, although it lacks the latter’s warmth and fullness.
Compared to the Bb trumpet, the low register of which corresponds to the bass trumpet’s upper register, it possesses far greater dynamic intensity as well as a darker timbre. It was primarily because of the instrument’s powerful sound that it was used by late Romantic composers.